npm ERR! code EOTP

What This Error Means

npm requires a one-time password (2FA) for this operation.

How to Fix It

1. Check which registry npm is using: npm config get registry.
2. If the package is scoped, verify scope registry mapping in .npmrc (example: @your-scope:registry=...).
3. If the command supports it, pass the OTP: npm <cmd> --otp=123456.
4. For CI, use an automation token that is allowed for your org policy (or adjust the 2FA requirement for the operation).
5. Re-login if your token is stale: npm logout then npm login.

Why It Happens

• Your account or the package requires 2FA for publish or restricted operations.
• You are using a token that is not allowed for the requested 2FA policy.

How to Verify

1. Re-run the original command and confirm it completes without prompting for OTP again.
2. Confirm the authenticated identity: npm whoami.

Manual authentication checks

1. Check current auth: npm whoami.
2. Inspect .npmrc for token config and registry routing.

Common CLI Output

npm ERR! code EOTP

npm ERR! This operation requires a one-time password from your authenticator.

How npm uses registry credentials

1. npm uses registry tokens for authentication and enforces registry policy (including 2FA requirements).
2. Some operations require an OTP in addition to a token.

Prevention Tips

• Use automation tokens for CI instead of personal tokens.
• Document org 2FA requirements so publish/install workflows are predictable.

Where This Can Be Triggered

  // No username, but we have other credentials; fetch the username from registry
  if (creds.token || creds.certfile && creds.keyfile) {
    const registryData = await npmFetch.json('/-/whoami', { ...opts })
    if (typeof registryData?.username === 'string') {
      return registryData.username
    }